在平面上画直观图来表示立体几何图形,是很重要的,因为它不仅为学生了解和介答一系列的立体几何证明题、计算题及作图题所必需,而且教学描画立体几何图形的过程,亦是发展学生的空间想象力和进行基本生产技术教育的过程,所以我们教师应该重视在教学过程中不断培养学生的画图能力。 It is important to draw an intuitive diagram on the plane to represent solid geometry, because it is not only necessary for students to understand and present a series of three-dimensional geometric proofs, calculations and drawing questions, but also to teach the drawing of three-dimensional geometric figures. The process is also a process of developing students’ spatial imagination and carrying out basic production and technical education. Therefore, our teachers should pay attention to continuously developing students’ drawing ability in the teaching process.